Banks, Battles, and Overconfidence

What more could I ask for?

One of my favorite writers writing about psychology, Winston Churchill, and finance.

Malcolm Gladwell's latest piece in this month's The New Yorker is a classic example of why Malcolm Gladwell, like Michael Lewis, is one of the greatest writers around. He has an amazingly curious mind and always finds a unique way to analyze an issue.

His latest piece, Cocksure - Banks, battles, and the psychology of overconfidence is just another reason you would be better off getting a PhD in psychology than an M.B.A.

From the article:

.....The psychologist Ellen Langer once had subjects engage in a betting game against either a self-assured, well-dressed opponent or a shy and badly dressed opponent (in Langer’s delightful phrasing, the “dapper” or the “schnook” condition), and she found that her subjects bet far more aggressively when they played against the schnook. They looked at their awkward opponent and thought, I’m better than he is. Yet the game was pure chance: all the players did was draw cards at random from a deck, and see who had the high hand. This is called the “illusion of control”: confidence spills over from areas where it may be warranted (“I’m savvier than that schnook”) to areas where it isn’t warranted at all (“and that means I’m going to draw higher cards”).

.....Several years ago, a team headed by the psychologist Mark Fenton-O’Creevy created a computer program that mimicked the ups and downs of an index like the Dow, and recruited, as subjects, members of a highly paid profession. As the line moved across the screen, Fenton-O’Creevy asked his subjects to press a series of buttons, which, they were told, might or might not affect the course of the line. At the end of the session, they were asked to rate their effectiveness in moving the line upward. The buttons had no effect at all on the line. But many of the players were convinced that their manipulation of the buttons made the index go up and up. The world these people inhabited was competitive and stressful and complex. They had been given every reason to be confident in their own judgments. If they sat down next to you, with a tape recorder, it wouldn’t take much for them to believe that they had you in the palm of their hand. They were traders at an investment bank.

.....This is what social scientists mean when they say that human overconfidence can be an adaptive trait. “In conflicts involving mutual assessment, an exaggerated assessment of the probability of winning increases the probability of winning,” Richard Wrangham, a biological anthropologist at Harvard, writes. “Selection therefore favors this form of overconfidence.” Winners know how to bluff. And who bluffs the best? The person who, instead of pretending to be stronger than he is, actually believes himself to be stronger than he is. According to Wrangham, self-deception reduces the chances of “behavioral leakage”; that is, of “inadvertently revealing the truth through an inappropriate behavior.” This much is in keeping with what some psychologists have been telling us for years—that it can be useful to be especially optimistic about how attractive our spouse is, or how marketable our new idea is. In the words of the social psychologist Roy Baumeister, humans have an “optimal margin of illusion.”